Gel Coat Cup Gun
Details
Details
Efficient & Affordable: Unique Gel Coat Spray Gun
You no longer have to invest in high-cost catalyst injector systems to produce high-quality parts. This unique Gel Coat Cup Gun has become the standard for producing small-to-medium sized parts with a limited equipment budget. Here's why:
What Is Duratec® Sunshield Clear Topcoat?
Duratec® Sunshield Clear Topcoat is a specially formulated polyester topcoat that offers excellent gloss and UV stability. #1045 Sunshield is compatible with epoxy, vinyl ester, and polyester resins and can be applied to epoxy laminates as an in-mold or post-mold coating.
Duratec® Sunshield gives a durable, scratch-resistant surface with excellent anti-yellowing properties, making it a strong protective clear over epoxy or vinyl ester parts.
Why Choose Duratec® Sunshield Clear Topcoat?
The anti-yellowing UV stability of Duratec® Sunshield Clear Topcoat is its defining advantage: epoxy parts in particular benefit from a clear coat that resists yellowing in sunlight. Sunshield also builds fast for a smooth, pit-free surface, which reduces cycle time and labor. Unlike a traditional gel coat, Duratec® Sunshield is applied as a misted, out-gassing build, which is what gives it its smooth, low-pit result.
What Are the Best Applications for Duratec® Sunshield Clear Topcoat?
Duratec® Sunshield Clear Topcoat is suited for use as a UV-protective clear topcoat over epoxy, vinyl ester, and polyester laminates, in-mold or post-mold, where gloss, scratch resistance, and anti-yellowing matter. Sunshield Clear Topcoat is particularly well suited to epoxy and carbon fiber parts that will see regular sunlight exposure.
How Should Duratec® Sunshield Clear Topcoat Be Used for Best Results?
Duratec® Sunshield Clear Topcoat should not be applied like traditional gel coat. Spray a light dust coat and let it set up for two minutes, then apply additional 4 to 5 mil coats, allowing at least two minutes to out-gas between each.
About 12 to 15 mils gives a good finish with UV protection; up to 22 mils can be applied where aggressive post sanding is needed. Post-mold, sand the surface with 180 grit for mechanical tooth. With epoxy laminates, water wash with a Scotch-Brite pad before and after sanding. Remove dust and acetone-wipe before applying. Sand the final spray with 400 grit, cure 8 hours, then wet sand from 400 to 1500 grit before polishing.
Technical Specifications
- Type: Polyester clear topcoat, UV stable, anti-yellowing
- Compatibility: Epoxy, vinyl ester, polyester; in-mold or post-mold
- Application: Dust coat set 2 minutes, then 4 to 5 mil coats with 2 minute out-gas; 12 to 15 mils typical, up to 22 mils
- Finishing: 400 grit after final spray, 8 hour cure, then wet sand 400 to 1500 grit and polish
- Pressure required: 60–100 psi
- Air consumption: 5.8 CFM at 80 psi
- Compressor required: 5 HP
- Air connection: ¼" TPR
- Dry weight: 2.0 lb.
Available Sizes and SKUs
- #1045-A — Quart
- #1045-AK — Case of 6 quarts
- #1045-B — Gallon
- #1045-C — Case of 4 gallons
- #1045/69-B — Gallon kit with 3 x #69 MEKP
- #1045/69-C — Case of 4 gallons with 10 x #69 MEKP
Data Sheets
Data Sheets
Shipping
Shipping
Sizes
Sizes

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Reviews
I'm brand new to gel cote work but realized quickly a standard hvlp gun wasn't going to work for me. My first try with this cup gun was expensive; I wasted nearly a quart of gelcoat when I couldn't get any spray at all. After replacing some of the o-rings and, I think most importantly, really getting the nozzle well seated in the aluminum cover plate, it worked very well. I will need more experience to regulate the volume, which is still to heavy. But I can see this as an excellent tool in more capable hands. Clean-up is a breeze and speeds the entire process. Better instructions might be a help.
Very well made. Very easy to clean (2 parts get dirty; the nozzle and the metal cup lid, as it just pulls apart. No wrench needed. However, it's out of a RoadRunner cartoon. Unlike an HVLP you should spray this gun from 3 feet away. And it's highly prone to drip and spray globs. So have a brush ready to sweep out any globs this thing ejects. Not a precision tool. But it's for gel-coat so Who cares, right?
This is a great gun but it I had not watched some YouTube videos on how to use it I would have hated it. It is not a normal spray gun in how it operates. Once I sorted out how it works I was amazed at how good it performed.